James herva jones



J. H. JONES.

GUARD FINGER.

(No Model.)

.No. 475,118. Patented May 17, 1892.

STATES PATENT QFFICEC- JAMES HERVA JONES, OF ROCKFORD, ILLINOIS, ASSIGNOR TO THE EMERSON, TALOOTT dz; COMPANY, OF SAME PLACE.

GUARD-FINGER.

SPECIFICATION forming part of Letters Patent No. 475,118, dated May 17, 1892.

Application filed March 26, 1889. Serial No. 304,826. .(No model.)

To all whom it may concern.-

ful Improvements in Guard-Fingers, of which the following is a specification. I,

The object of this invention is to construct a guard-finger with a detachable and reversible sickle-rest, which is firmly locked to the guard-finger and the finger-bar by the process of bolting the guard-finger to the fingerbar.

In the accompanying drawings, Figure l is an isometrical representation of a guard secured to a finger-bar and a section of sickle in position. Fig. 2 is an isometrical representation in section of Fig. 1, excepting the sickle, which has been omitted. Fig. 3 is an isometrical representation of a guard, showing my improved sickle-rest in position. Fig. 4. is an isoinetrical representation of a guard with the sickle-rest removed. Fig. 5 is an under side isometrical representation of the sickle-rest.

In many harvesters of grass and grainnotably mowers-that part of the guard-finger known as the shoulder, which is a part of the solid guard and which is drawn up against the front edge of the finger-bar by the coupling-bolt, is made to serve the purpose, also, of a ledge on which the back edge of the sickle-sections rest. In this position the shoulder is interposed between the sickle-back or cutter-bar and the finger-bar and becomes the surface against which the back edge of the cutter-bar runs and wears. The pressure of the cutter-bar against this shoulder is severe, as a result of the resistance of the grass in the shear cut of the sections against the guard-plates. The consequence is that the shoulder of the guard-finger is rapidly worn out when the machine is used in sandy countries. The guard-finger is then worthless, although its cutting parts may still be perfect.

I form the guard-finger with shoulders I on its opposite sides of the concave segmental form, crosswise, first, to give it a firm bearing against the finger-bar, and, secondly, of a concave segmental form that it may be easily dressed by a milling-wheel. I also form the i sickle-rest, with a portion of its lower edge of Be it known that I, JAMES HERVA J onns,- a citizen of the United States, residing at Rockford, in the county of IVinnebago and State of Illinois, have invented certain new and use-' a convex segmental form, to fittingly rest upon the guard. This construction of a guard-finger and sickle-rest allows the sickle-rest to have a full and firm bearing against the edge of the finger-bar at the center of its length, while the guard-finger has a firm bearing against the finger-bar also on opposite sides.

The guard is provided with a circular recess 4' for the reception of the circular por tion 5 of the sickle-rest. I do not wish to confine myself to the circular form of these parts; but I make them of this form, prefer ably, that they may be easily dressed witha milling-tool.

I construct the guard-finger with upper beveled edges 6 on its opposite shoulders, descen ding toward the finger-bar 2, and the sickle rest with double-beveled edges 11 on its under side. The result is that when the sickle-rest is drawn down upon the guard by the screwbolt 8 it slides snugly against the finger-bar, and is thus held much more firmly.

, I make the guard finger with a lower smaller secondary recess 9 within the upper recess 4 and provide a lower supplementary stud 10 on the under side of the plate or disk of the sickle-rest, which enters into and fits the lower recess 9 in the guard-finger. The result of this construction is to hold the sicklerest in a perfectly-upright position against the front edge of the finger-bar when it is clamped to place by the guardfinger and screw-bolt. In this case the stud becomes a hearing at some distance below the finger-bar and prevents the sickle-rest from being rocked or rolled over when the finger-bar is firmly drawn down upon the lip 5 of the sickle-rest. A nick or notch 7 is made in the under side of the sickle-rest on each side of the plate or disk 5. The object of these is to render the sickle-rest, which is made of ductile metal, flexible in a slight degree, so'that while it is firmly drawn down upon the two shoulders of the guard-finger the guard-finger may also be drawn perfectly flat and firm against the under side of the finger-bar by the screw-bolt, there being give enough at the notches for this purpose.

I construct the sickle rest of exactly duplicate form on its two sides. This is for the stituted at a very small cost, as compared with the cost of the whole guard-finger, while a the guard-finger is still preserved in good condition for further use.

I claim as my invention 1. The combination of a guard-finger and a reversible sickle-rest, the guard having a concave seat crosswise of segmental form and the sickle-rest having a portion of its lower edge of convex segmental form to fit the guard-finger.

2. The combination of a finger-bar, a guardfinger, and a sickle-rest, the guard-finger having upper beveled edges on its opposite shoulders and the sickle-rest having beveled edges onits underside.

3. The combination of a guard-finger and a detachable sickle-rest, the sickle-rest having nicks or notches in its lower edge on each side of the central disk or lip.

4. A guard-finger having a concave seat crosswise of segmental form which receives a sickle-rest having a portion of its lower edge of convex segmental form.

5. A sickle-rest for a guard-finger, having transverse wings extending from a central 1 hub, said hub adapted to enter a recess in the guard-finger and also enabling the finger-bar to hold the rest in position by resting on the hub.

6. A guard-finger having a central depression which receives a hub on a sickle-rest,

'having wings extending crosswise from the depress-ion which receive wings of the sicklerest.

JAMES HERVA JONES.

. Witnesses:

A. O. BEHEL, E. BE HEL. 

